---
On 11/09/17 23:15, Paul B Mahol wrote:
> On 9/12/17, Mark Thompson <s...@jkqxz.net> wrote:
>> On 07/09/17 22:56, Mark Thompson wrote:
>>> ---
>>> Now sets the trusted packet flag; otherwise unchanged.
>>>
>>>
>>> configure | 1 +
>>> libavdevice/Makefile | 1 +
>>> libavdevice/alldevices.c | 1 +
>>> libavdevice/kmsgrab.c | 455
>>> +++++++++++++++++++++++++++++++++++++++++++++++
>>> 4 files changed, 458 insertions(+)
>>> create mode 100644 libavdevice/kmsgrab.c
>>
>> Series approved by atomnuker on IRC. Does anyone else want to comment on
>> the wrapped_avframe / AV_PKT_FLAG_TRUSTED setup (or anything else)? If not,
>> I'll push this the day after tomorrow.
>
> Missing docs.
doc/indevs.texi | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/doc/indevs.texi b/doc/indevs.texi
index ad6418751b..30b7ac2380 100644
--- a/doc/indevs.texi
+++ b/doc/indevs.texi
@@ -331,6 +331,68 @@ ffmpeg -channels 16 -format_code Hi50 -f decklink -i
'UltraStudio Mini Recorder'
@end itemize
+@section kmsgrab
+
+KMS video input device.
+
+Captures the KMS scanout framebuffer associated with a specified CRTC or plane
as a
+DRM object that can be passed to other hardware functions.
+
+Requires either DRM master or CAP_SYS_ADMIN to run.
+
+If you don't understand what all of that means, you probably don't want this.
Look at
+@option{x11grab} instead.
+
+@subsection Options
+
+@table @option
+
+@item device
+DRM device to capture on. Defaults to @option{/dev/dri/card0}.
+
+@item format
+Pixel format of the framebuffer. Defaults to @option{bgr0}.
+
+@item format_modifier
+Format modifier to signal on output frames. This is necessary to import
correctly into
+some APIs, but can't be autodetected. See the libdrm documentation for
possible values.
+
+@item crtc_id
+KMS CRTC ID to define the capture source. The first active plane on the given
CRTC
+will be used.
+
+@item plane_id
+KMS plane ID to define the capture source. Defaults to the first active plane
found if
+neither @option{crtc_id} nor @option{plane_id} are specified.
+
+@item framerate
+Framerate to capture at. This is not synchronised to any page flipping or
framebuffer
+changes - it just defines the interval at which the framebuffer is sampled.
Sampling
+faster than the framebuffer update rate will generate independent frames with
the same
+content. Defaults to @code{30}.
+
+@end table
+
+@subsection Examples
+
+@itemize
+
+@item
+Capture from the first active plane, download the result to normal frames and
encode.
+This will only work if the framebuffer is both linear and mappable - if not,
the result
+may be scrambled or fail to download.
+@example
+ffmpeg -f kmsgrab -i - -vf 'hwdownload,format=bgr0' output.mp4
+@end example
+
+@item
+Capture from CRTC ID 42 at 60fps, map the result to VAAPI, convert to NV12 and
encode as H.264.
+@example
+ffmpeg -crtc_id 42 -framerate 60 -f kmsgrab -i - -vf
'hwmap=derive_device=vaapi,scale_vaapi=w=1920:h=1080:format=nv12' -c:v
h264_vaapi output.mp4
+@end example
+
+@end itemize
+
@section libndi_newtek
The libndi_newtek input device provides capture capabilities for using NDI
(Network
--
2.11.0
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